Apparatus fob handling- elite dust



Ma 4, 1926. 1,582,946 G. w. VREELAND APPARATUS FOR HANDLING FLUE DUST Original Filed Oct. 13. 1921 3 Sheets-Sheet 1 Z 4 5 J l Vilma-sea: Ina/inter:

May 4,1926. 1,582,946 G. W. VREELAND APPARATUS FOR HANDLING FLUE DUST Original Filed Oct. 15. 1921 3 Sheets-Sheet 2 l v I i l Jimmfbz": Ky 572356 76 k/ M 5544/1/0,

May 4 1926..

G. W. VREELAND AFPARATUS' FOR HANDLING F Lim Dus'r Original Filed Oct. 13, 1921 6 Sheets-Sheet 5 Fitness-es.-

Patented May 4, 1926.

GEORGE W. VREELAND, 02. STEUBEEVILLE, UPI-I10.

AIIARATUS FOR HANDLING FLUE DUST.

Original application filed October 13, 1921, Serial No.

1925. Divided and this application filed September 11, 1925.

To all whom it may concern:

Be it known that I, Gnonon 1V. Vnrinmm),

a citizen or the United States, and resident of Steuhenvillc. in the county of Jefferson 5 and t-Etate of Ohio, have invented certain new and useful Improvements in Apparatus for Handling Flue-Dust, of which the following is a specification.

My invention relates to the handling of hot blast furnace fine dust, and while not limited thereto relates more particularly to the handling of hot flue dust as it is discharged from dry gas cleaners and dust catchers, and is a division of my prior ap plication Serial No. 507.410. filed ()ctober 1th 19:21. which has resulted in Patent No. 1.551123. dated October 13, 1925.

One object of this invention is to provide a novel apparatus adapted to dampen and cool the hot flue dust as it is discharged from the gas cleaners, thereby facilitating the handling; and transportation oi said dust.

A! :turther object is to provide the novel combination of apparatus hereinafter described and illustrated in the accompanying drawings.

Heretofore the hot flue dust has been discharged from the gas cleaners and dust catchers into cars or other receptacles. and due to its finely divided or pulverized form it holds its heat for days. In some instances it is so hotthat it will. damage the car into which it is dumped. Also, due to its pulverized form it is readily scattered by slight winds and thereby forms amenace to workmen in and around the mill. The present invention eliminates the above disadvantages and provides for the handling of the hot flue dust in a highly improved manner. 40 Referring now particularly to the drawforming part of this specification, Fig;- ure 1 is a front elevation of the apparatus for carrying out my improved method applied to the lower end of a dry gas cleaner. Figure 1 is a somewhat diagrammatic side elevation of a dry gas cleaner, the lower end of which is shown on a larger scale in Figure 1.

Figure 2 is a side elevation thereof.

Figure 3 is a plan on the line IIIIII of Figure 2.

Figure 4 is a sectional rear elevation on the line IVIV of Figure 2.

In the accompanying drawings, 1 designates a dry gas cleaner for removing the 557,411). Patent No. 1,557,123, dated October 13,

Serial No. 55,763.

flue dust and other foreign matter from hot blast furnace gases. 'lfhe cleaner 1 is pro vided witha hopper-like lower end 2 and dust conveying pipes 55. The pipes are provided with branches 3 which communicate with the several cleaning chambers within the cleaner. A gas inlet main 1 and a gas outlet main 1 extend upwardly along the opposite sides of the cleaner to carry the unclean gases to the cleaner and the cleaned gases away from the cleaner. The lower end 2 oi: the cleaner 1 and the lower ends of the pipes or conduits B are connected with suitable inlets and 5, respectively, in a closed dust-proof conveyer casing 6. Suitahle hells 7 and 8 are provided in the lower end of the cleaner casing 9 and pipes 3 respectively, each 0t which has a counterweighted control lever 9 so that they will only open to discharge the dust into the conveyer casing after a predetermined amount has collected or built up above the bells, or said bells may be operated manually at any desired time.

Right and left-hand screw conveyer flights 10 and 11 are mounted on a single conveyor shaft 12 journaled in bearings 13 and 14..

The conveyer casing; is provided with a central outlet 15, served by both sets of: the conveyer flights l0 and 1L and communicates with an inlet in one end of a closed dustprooi' pug mill casing 16.

The pup mill casing 16 is provided with an outlet spout 1? at its opposite end through which the dust is discharged into a car 18 or other receptacle.

A pair of shafts 19 and 20 extend longitudinally within the pug mill casing 16 and are journaled in suitable bearings 21 and 22, respectively.

A plurality of blades or paddles 23 are secured on each of the shafts 19 and 20 for thoroughly mixing the flue dust. The blades or paddles 23 are angularly disposed or twisted so as to move the flue dust lengthwise ot the casing 16 as it is mixed and force it to discharge through the discharge spout 17.

A pair of spray pipes 24 and 25 are ar ranged to enter the pug mill casing 16 ad jacent its inlet end so as to spray water upon the dust as it enters the mill.

The conveyer shaft- 12 and paddle shafts l9 and 530 are all dr en from a single inotor 26. The motor 26 is provided with a sprocket 27 which is connected to a sprocket 28 on the shaft 20 by a drive chain 29. A second sprocket 30 is mounted on the shaft 20 and is connected by a drive chain 31 to a sprocket 31 on a shaft 32 journaled in bearings 33 on a bracket extending from the conveyer casing (5. The shaft 32 is provided with a bevel gear 3% in mesh with a second bevel gear 35 on the end of the conv yer shaft- 12 and gears 36 and 37 are mounted on the paddle shafts 19 and 20, respectively, and are in mesh with each other, so that the conveyor shaft l2 and paddle shafts 19 and 20 are driven simultaneously, and the paddle shafts are rotated in opposite directions to each other.

The operation of the above described paratus is as follows- The hot blast furnace gases which are laden with fine dust and other foreign matter pass from the main 1 into the dry gas cleaner 1 where the dust and other foreign matter is removed and the cleaned gases pass out of the cleaner into. the main 1". The fine dust and pieces of coke, limestone or other foreign matter flow from the cleaner into the conduits or pipes 3 and some also collects in the hopper-like bottom 2 of the cleaner 1. lVhen the line dust collected in the hopper-like bottom 2 and conduits or pipes 3 becomes sufficient to overcome the counterweighted bells 7 and 8, the bells will open and the collected dust will flow into the conveyor casing 6 and be moved or conreyed toward the central outlet port 15 by the screw conveyer flights l0 and ll and forced to fall through the port 15 into the pug mill casino l6. As the fine dust enters the pug n'iill casing 16 it is sprayed with water from the spray pipes and 25 and then thoroughly mixed by the blades or paddles 33 on the shafts 19 and 20 within the pug mill casing, thereby being. thoroughly moistened and cooled. The fine dust is Conveyed. along the pug mill casingaml forced to fall through the dischargespout 17 into a car or other receptacle 18 by the blades 23 due to their novel shape.

it will he readily seen that after the finely divided fine dust is thoroughly moistened;

and cooled it may be readily lnndlcd and conveyed from place to place since the par-- ticles will adhere sullicicntly to each other to prevent it being blown around or scattered by the wind.

It will be understood that the words dry gas cleaner. as used in the claims may include any mechanism for the separation of flue dust and the like from hot blast furnace gases by dry cleaning, whether by the well known gravity separation methods, filtering, or any other dry method.

I claim:

1. The combination with apparatus for separating flue dustfrom gases,'of a pug mill, means for conveying said dust from said apparatus to said pug mill, means for supplying water to said pu mill, and means for intimately mixing said water and said dust to dampen the dust.

2. The combination with apparatus for separating line oust from hot blast furnace gases, and pug mill, of enclosedscrew conveyers for conveying said flue dust in said apparatus to saidv pug mill, means for mixing water with the fine dust in said pug mill, and rotary paddles in said pug mill for intimately mixing said water and said fine dust to cool and dampen the dust in the pass-age thereof through the pug mill,

The combination with a dry cleaner adapted to, separate flue dust from hot blast furnacegases, of a closed pug mill adapted to receive and intimately mix the flue dust with water to thereby dan'i-pen and cool the flue dust.

The combination with a dry er adapted to cparate fine dust .rom hot blast furnac gases, and having discharge ports for the separated fine dust, of a closed receptacle for receiving said dust, means for s cleun S1'l))l mg water to said receptacle. and l n L power drive-n means for conveying the flue dust through the. receptacle and intiu' atcly mixing the line dust and water to thereby cool the fine dust.

5. The conibination with a dry gas cleaner adapted to separate fine dust from hot blast furnace gases, and having discharge ports for the separated fine dust, of anenclosed pug mill, enclosed. screw conneyers for cou ducting the flue dust from said discharge ports to said pug mill, and means for introducing. water into said pug mill, said pug mill being adapted to intimat y mix the water and flue dust in the pas. thereof through the pug mill and thereby rapidly cool the flue dust.

in testimony whereof, I have hereunto set my hand.

(iEORmE V. VR-Eil JANI). 

